Fish: Difference between revisions

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Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high [[mountain stream]]s (e.g., [[Salvelinus|char]] and [[gudgeon (fish)|gudgeon]]) to the [[abyssal zone|abyssal]] and even [[hadal zone|hadal]] depths of the deepest oceans (e.g., [[cusk-eels]] and [[snailfish]]), although none have been found in the deepest 25% of the ocean. The deepest living fish in the ocean so far found is a cusk-eel, ''[[Abyssobrotula galatheae]]'', recorded at the bottom of the [[Puerto Rico Trench]] at {{convert|8370|m|ft|abbr=on}}.

In terms of temperature, [[Jonah's icefish]] live in cold{{efn|The temperature is often around 0 C. The freezing point of seawater at the surface is -1.85 C, falling to -2.62 C at a depth of 1000 metres. However, the water can be [[supercooled]] somewhat below these temperatures.}} waters of the Southern Ocean, including under the [[Filchner–Ronne Ice Shelf]] at a latitude of 79°S, while [[desert pupfish]] live in desert springs, streams, and marshes, sometimes highly saline, with water temperatures as high as 36 C.

In terms of temperature, [[Jonah's icefish]] live in cold waters of the Southern Ocean, including under the [[Filchner–Ronne Ice Shelf]] at a latitude of 79°S, while [[desert pupfish]] live in desert springs, streams, and marshes, sometimes highly saline, with water temperatures as high as 36 C.

A few fish live mostly on land or lay their eggs on land near water. [[Mudskipper]]s feed and interact with one another on mudflats and go underwater to hide in their burrows. A single [[undescribed species]] of ''[[Phreatobius]]'' has been called a true "land fish" as this worm-like catfish strictly lives among waterlogged [[leaf litter]]. [[Cavefish]] of multiple families live in [[underground lake]]s, [[underground river]]s or [[aquifer]]s.

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 Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high [[mountain stream]]s (e.g., [[Salvelinus|char]] and [[gudgeon (fish)|gudgeon]]) to the [[abyssal zone|abyssal]] and even [[hadal zone|hadal]] depths of the deepest oceans (e.g., [[cusk-eels]] and [[snailfish]]), although none have been found in the deepest 25% of the ocean. The deepest living fish in the ocean so far found is a cusk-eel, ''[[Abyssobrotula galatheae]]'', recorded at the bottom of the [[Puerto Rico Trench]] at {{convert|8370|m|ft|abbr=on}}.
-In terms of temperature, [[Jonah's icefish]] live in cold{{efn|The temperature is often around 0 C. The freezing point of seawater at the surface is -1.85 C, falling to -2.62 C at a depth of 1000 metres. However, the water can be [[supercooled]] somewhat below these temperatures.}} waters of the Southern Ocean, including under the [[Filchner–Ronne Ice Shelf]] at a latitude of 79°S, while [[desert pupfish]] live in desert springs, streams, and marshes, sometimes highly saline, with water temperatures as high as 36 C.
+In terms of temperature, [[Jonah's icefish]] live in cold waters of the Southern Ocean, including under the [[Filchner–Ronne Ice Shelf]] at a latitude of 79°S, while [[desert pupfish]] live in desert springs, streams, and marshes, sometimes highly saline, with water temperatures as high as 36 C.
 A few fish live mostly on land or lay their eggs on land near water. [[Mudskipper]]s feed and interact with one another on mudflats and go underwater to hide in their burrows. A single [[undescribed species]] of ''[[Phreatobius]]'' has been called a true "land fish" as this worm-like catfish strictly lives among waterlogged [[leaf litter]]. [[Cavefish]] of multiple families live in [[underground lake]]s, [[underground river]]s or [[aquifer]]s.